Merge pull request #14120 from asgerf/dynamic/typemodel-istypeused

Dynamic: add TypeModel.isTypeUsed

javascript/ql/test/library-tests/frameworks/data/test.expected

@@ -79,6 +79,7 @@ taintFlow
 | test.js:269:10:269:31 | this.ba ... ource() | test.js:269:10:269:31 | this.ba ... ource() |
 | test.js:272:6:272:40 | new MyS ... ource() | test.js:272:6:272:40 | new MyS ... ource() |
 | test.js:274:6:274:39 | testlib ... eName() | test.js:274:6:274:39 | testlib ... eName() |
+| test.js:277:8:277:31 | "danger ... .danger | test.js:277:8:277:31 | "danger ... .danger |
 isSink
 | test.js:54:18:54:25 | source() | test-sink |
 | test.js:55:22:55:29 | source() | test-sink |

javascript/ql/test/library-tests/frameworks/data/test.ext.yml

@@ -11,6 +11,7 @@ extensions:
       - ['testlib', 'Member[ParamDecoratorSource].DecoratedParameter', 'test-source']
       - ['testlib', 'Member[getSource].ReturnValue', 'test-source']
       - ['(testlib)', 'Member[parenthesizedPackageName].ReturnValue', 'test-source']
+      - ['danger-constant', 'Member[danger]', 'test-source']
 
   - addsTo:
       pack: codeql/javascript-all

javascript/ql/test/library-tests/frameworks/data/test.js

@@ -272,3 +272,9 @@ class MySubclass2 extends MySubclass {
 sink(new MySubclass2().baseclassSource()); // NOT OK
 
 sink(testlib.parenthesizedPackageName()); // NOT OK
+
+function dangerConstant() {
+  sink("danger-constant".danger); // NOT OK
+  sink("danger-constant".safe); // OK
+  sink("danger-constant"); // OK
+}

javascript/ql/test/library-tests/frameworks/data/test.ql

@@ -2,6 +2,15 @@ import javascript
 import testUtilities.ConsistencyChecking
 import semmle.javascript.frameworks.data.internal.ApiGraphModels as ApiGraphModels
 
+class TypeModelFromCodeQL extends ModelInput::TypeModel {
+  override predicate isTypeUsed(string type) { type = "danger-constant" }
+
+  override DataFlow::Node getASource(string type) {
+    type = "danger-constant" and
+    result.getStringValue() = "danger-constant"
+  }
+}
+
 class BasicTaintTracking extends TaintTracking::Configuration {
   BasicTaintTracking() { this = "BasicTaintTracking" }